Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / mtd / nand / bcm47xxnflash / main.c

diff --git a/kernel/drivers/mtd/nand/bcm47xxnflash/main.c b/kernel/drivers/mtd/nand/bcm47xxnflash/main.c
new file mode 100644 (file)
index 0000000..461577c
--- /dev/null
+++ b/kernel/drivers/mtd/nand/bcm47xxnflash/main.c
@@ -0,0 +1,79 @@
+/*
+ * BCM47XX NAND flash driver
+ *
+ * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include "bcm47xxnflash.h"
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/bcma/bcma.h>
+
+MODULE_DESCRIPTION("NAND flash driver for BCMA bus");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Rafał Miłecki");
+
+static const char *probes[] = { "bcm47xxpart", NULL };
+
+static int bcm47xxnflash_probe(struct platform_device *pdev)
+{
+       struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
+       struct bcm47xxnflash *b47n;
+       int err = 0;
+
+       b47n = devm_kzalloc(&pdev->dev, sizeof(*b47n), GFP_KERNEL);
+       if (!b47n)
+               return -ENOMEM;
+
+       b47n->nand_chip.priv = b47n;
+       b47n->mtd.owner = THIS_MODULE;
+       b47n->mtd.priv = &b47n->nand_chip; /* Required */
+       b47n->cc = container_of(nflash, struct bcma_drv_cc, nflash);
+
+       if (b47n->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
+               err = bcm47xxnflash_ops_bcm4706_init(b47n);
+       } else {
+               pr_err("Device not supported\n");
+               err = -ENOTSUPP;
+       }
+       if (err) {
+               pr_err("Initialization failed: %d\n", err);
+               return err;
+       }
+
+       err = mtd_device_parse_register(&b47n->mtd, probes, NULL, NULL, 0);
+       if (err) {
+               pr_err("Failed to register MTD device: %d\n", err);
+               return err;
+       }
+
+       return 0;
+}
+
+static int bcm47xxnflash_remove(struct platform_device *pdev)
+{
+       struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
+
+       if (nflash->mtd)
+               mtd_device_unregister(nflash->mtd);
+
+       return 0;
+}
+
+static struct platform_driver bcm47xxnflash_driver = {
+       .probe  = bcm47xxnflash_probe,
+       .remove = bcm47xxnflash_remove,
+       .driver = {
+               .name = "bcma_nflash",
+       },
+};
+
+module_platform_driver(bcm47xxnflash_driver);